"To all my beautiful fans. I couldn’t be more devastated that I am unable to perform tonight," she wrote. "I sing this entire show live and pride myself in giving it my all but when I sang in the rain at Citi Field I got sick and have been pushing through. I am so sorry to anyone who had their heart set on seeing me tonight. I love you. Xoxo, Joanne."

Then, when fans' disappointment began pouring in, Gaga decided she'd try to make it up to the crestfallen Little Monsters.

"I'm sending free [pizza] to any monsters outside my hotel The William Gray Montréal," she wrote. "I love u so much & I'm so sorry u are the most loyal fans."

"QUEEN OF PIZZA," one fan responded, while another noted "you're a human being, don't be sorry, it happens."